Ultra-slim lock



FIG. 1 is a front and top perspective view of an ultra-slim lock showing my new design;

FIG. 2 is an exploded open view of the lock in FIG. 1;

FIG. 3 is a back and bottom view of the lock in FIG. 1;

FIG. 4 is an exploded open view thereof;

FIG. 5 is an inner-end view of the catch portion thereof; and,

FIG. 6 is an inner-end view of the locking portion thereof. 

The ornamental design for an ultra-slim lock, as shown and described. 